WO1997021234A2 - Verfahren und vorrichtung zum überwachen des abbrandes der kontaktstücke bei einem schaltgerät - Google Patents
Verfahren und vorrichtung zum überwachen des abbrandes der kontaktstücke bei einem schaltgerät Download PDFInfo
- Publication number
- WO1997021234A2 WO1997021234A2 PCT/DE1996/002265 DE9602265W WO9721234A2 WO 1997021234 A2 WO1997021234 A2 WO 1997021234A2 DE 9602265 W DE9602265 W DE 9602265W WO 9721234 A2 WO9721234 A2 WO 9721234A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- arc voltage
- contact pieces
- wear
- arc
- switching
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/333—Testing of the switching capacity of high-voltage circuit-breakers ; Testing of breaking capacity or related variables, e.g. post arc current or transient recovery voltage
- G01R31/3333—Apparatus, systems or circuits therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/0015—Means for testing or for inspecting contacts, e.g. wear indicator
Definitions
- the invention relates to a method for monitoring the erosion of the contact pieces in a switching device, in particular for assessing the state of wear of contactors, the arc voltage which arises between the opening contact pieces being detected and evaluated as an indicator of the state of wear of the contacts during the switching-off process.
- the invention also relates to a suitable device for implementing the method.
- the service life of switching contact pieces is determined by the fire, i.e. determines the gradual loss of the contact material under the influence of the arc which arises during the switching process.
- the erosion will usually remove the contact pieces unevenly.
- the end of the service life of the switch contact pieces is reached when in the contact area the contact material is either completely eroded at at least one point or has been removed to a defined minimum thickness.
- the state of the switch contact pieces is still judged in practice solely by opening the switchgear and by visual inspection. This applies in particular to the remaining service life to be expected, the knowledge of which is of central importance for the usability of the switching device and thus for the operational safety of the switched consumer.
- DE 37 14 802 AI discloses an electronic switch in which at least one of the contact pieces is assigned a light guide, the transmission properties of which can be measured from the outside by means of suitable optical auxiliary devices. An improperly advanced contact erosion should lead to a change in the optical transmission properties and ultimately to the destruction of the light guide.
- DE 40 28 721 C2 discloses a method for determining the remaining service life of switching devices, in which the charges which have flowed during a switching process are determined electronically and added up for the switching processes. In principle, this method is not only suitable for displaying a defined remaining service life, but also for indicating the state of wear of the contact pieces at any time.
- the object of the invention is to provide a simplified method which is suitable for assessing the operational readiness of shooters and to provide an associated device.
- the object is achieved according to the invention in a method of the type mentioned at the outset in that the fluctuation in the arc voltage is used as a criterion for the state of wear of the contact pieces.
- the higher-frequency components of the arc voltage in particular above approximately 1 kHz, are preferably used to detect the degree of fluctuation in the arc voltage.
- the higher-frequency components of the arc voltage squared after filtering. The squares can be summed up and compared to a threshold.
- the device according to the invention is characterized by a circuit arrangement with which the fluctuation in the arc voltage is detected and used to assess the state of wear of the contact pieces.
- the circuit arrangement advantageously consists of a high-pass filter, a square element, an integrator and a unit for generating an error signal.
- the invention provides a method and the associated device with which the state of the main contacts, which are responsible for the electrical life of the contactor, can be recognized in a simple manner for use with contactors as switching devices.
- units that are already present in the switching device can also be used for signal detection.
- the single figure shows an evaluation unit for the arc voltage which arises when a switching device is switched off between the opening contact pieces.
- the fusible link that forms between the contact pieces changes into an arc that is initially very short, but widening as the contact opening increases.
- This arc forms base points on the contact pads of the contact pieces, which, in particular in the case of contactors, advantageously consist of contact materials based on silver-metal oxide, for example AgS-n0 2 .
- the degree of fluctuation is defined as the difference between the maximum and the minimum of the arc voltage that occurs. It is Caused on the one hand by the movement of the arc, the speed of which lies at about 20 to 40 m / s, and on the other hand by the inhomogeneities on the contact piece surface, in which there are roughnesses of about 100 to 500 ⁇ m. For example, at a speed of 20 m / s and an average roughness of the contact surface of 200 ⁇ m, a frequency to be evaluated results in the range of 100 kHz. All sizes depend on the type and condition of the contact pieces, frequencies in each case above 1 kHz, so that these higher-frequency components of the arc voltage are to be examined.
- a first connection to a switching device is designated U LB in the figure.
- the U LB connection is followed by a high-pass filter 1, which filters out the higher-frequency components of the arc voltage during the switch-off process, so that the low-frequency components of the arc voltage are masked out.
- the resulting signal becomes an amount-forming operation subjected, for example, given to a squarer 2, and summed up after squaring by an integrator 3.
- a corresponding error signal is generated by comparison with the signal of a threshold value generator 4 and is displayed.
- Corresponding display devices can be designed in a suitable manner for this purpose. The signal delivered in this way can be fed into a bus system for central communication.
- the high-pass filter 1 can also be emulated in software by forming the difference of the signals from a low-pass filter. It is with the
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Keying Circuit Devices (AREA)
- Relay Circuits (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52086097A JP3650127B2 (ja) | 1995-12-01 | 1996-11-25 | 開閉器における接触片の焼損監視方法および装置 |
DE59610120T DE59610120D1 (de) | 1995-12-01 | 1996-11-25 | Verfahren und vorrichtung zum überwachen des abbrandes der kontaktstücke bei einem schaltgerät |
EP96946014A EP0864168B1 (de) | 1995-12-01 | 1996-11-25 | Verfahren und vorrichtung zum überwachen des abbrandes der kontaktstücke bei einem schaltgerät |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19544926.6 | 1995-12-01 | ||
DE19544926A DE19544926C1 (de) | 1995-12-01 | 1995-12-01 | Verfahren und Vorrichtung zum Überwachen des Abbrandes der Kontaktstücke bei einem Schaltgerät |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1997021234A2 true WO1997021234A2 (de) | 1997-06-12 |
WO1997021234A3 WO1997021234A3 (de) | 1997-08-14 |
Family
ID=7778977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1996/002265 WO1997021234A2 (de) | 1995-12-01 | 1996-11-25 | Verfahren und vorrichtung zum überwachen des abbrandes der kontaktstücke bei einem schaltgerät |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0864168B1 (de) |
JP (1) | JP3650127B2 (de) |
CN (1) | CN1068955C (de) |
DE (2) | DE19544926C1 (de) |
WO (1) | WO1997021234A2 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1328591C (zh) * | 2005-12-26 | 2007-07-25 | 通领科技集团有限公司 | 接地故障断路器寿命终止检测保护方法及其电路 |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19727986C2 (de) * | 1997-07-01 | 2001-10-11 | Moeller Gmbh | Schaltungsanordnung zur Ermittlung des Kontaktabbrandes von einem elektrischen Schaltgerät |
DE10003918C1 (de) * | 2000-01-29 | 2001-07-05 | Reinhausen Maschf Scheubeck | Verfahren zur Überwachung des Kontaktabbrandes bei Stufenschaltern |
DE10260248B4 (de) * | 2002-12-20 | 2005-07-21 | Siemens Ag | Verfahren zur Bestimmung der Restlebensdauer eines Schaltgerätes und zugehörige Anordnung |
DE10260249B4 (de) * | 2002-12-20 | 2005-07-28 | Siemens Ag | Verfahren und Vorrichtung zur Bestimmung der Restlebensdauer eines Schaltgerätes |
FI119231B (fi) * | 2006-12-08 | 2008-09-15 | Kone Corp | Menetelmä, järjestelmä ja ohjelmistotuote hissin turvakytkinten kunnon seuraamiseksi |
ES2380182T3 (es) * | 2009-11-25 | 2012-05-09 | Abb Research Ltd. | Procedimiento y dispositivo para la determinación de un desgaste de un elemento de contacto |
WO2012072810A1 (de) | 2010-12-02 | 2012-06-07 | Abb Research Ltd | Verfahren und vorrichtung zur überwachung von schaltgeräten |
DE102014200681A1 (de) | 2014-01-16 | 2015-07-16 | Robert Bosch Gmbh | Schaltvorrichtung zum Schalten hoher elektrischer Ströme und Batteriesystem mit einer solchen Schaltvorrichtung |
CN105116818B (zh) * | 2015-07-16 | 2018-01-16 | 珠海格力电器股份有限公司 | 交流接触器的监控方法和系统 |
FR3069064B1 (fr) * | 2017-07-13 | 2022-02-11 | Schneider Electric Ind Sas | Dispositif de commutation electrique et procede de detection d'usure associe |
DE102018108102A1 (de) * | 2018-04-05 | 2019-10-10 | Seg Automotive Germany Gmbh | Verfahren zum Betreiben eines Starters eines Verbrennungsmotors, Überwachungsvorrichtung und Starter |
CN110379673B (zh) * | 2019-07-08 | 2021-09-03 | 广州小鹏汽车科技有限公司 | 继电器保护方法及装置 |
CN111933459A (zh) * | 2020-07-20 | 2020-11-13 | 西安热工研究院有限公司 | 一种利用电弧功率检测断路器触头电气磨损状态的方法 |
EP3971927A1 (de) | 2020-09-16 | 2022-03-23 | ABB Schweiz AG | Schützansteuerung |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2640921A1 (de) * | 1976-09-08 | 1978-03-09 | Siemens Ag | Vakuumschaltgeraet mit einer einrichtung zur ueberwachung der schaltstuecke |
DE2727378A1 (de) * | 1977-06-15 | 1979-01-04 | Siemens Ag | Einrichtung zur kontrolle der betriebsfaehigkeit von schaltgeraeten |
DE4309177A1 (de) * | 1993-03-22 | 1994-09-29 | Siemens Ag | Schaltgerät, insbesondere Schütz- oder Leistungsschalter |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3714802A1 (de) * | 1987-05-04 | 1988-11-17 | Siemens Ag | Elektrischer schalter |
DE4028721C2 (de) * | 1990-09-10 | 1995-05-11 | Siemens Ag | Verfahren und Anordnung zur Ermittlung der Restlebensdauer von Schaltgeräten |
DE4132533A1 (de) * | 1991-09-30 | 1993-04-01 | Siemens Ag | Verfahren und zugehoerige messanordnung zur bewertung des lichtbogens an gleitkontakten von elektrischen maschinen |
DE4416781A1 (de) * | 1994-05-09 | 1995-11-23 | Forgenta Forschungstechnik Und | Verfahren und Schaltungsanordnung zur Messung des Verlaufs des Löschfunkens, insbesondere bei Leistungsschaltern |
-
1995
- 1995-12-01 DE DE19544926A patent/DE19544926C1/de not_active Expired - Fee Related
-
1996
- 1996-11-25 JP JP52086097A patent/JP3650127B2/ja not_active Expired - Fee Related
- 1996-11-25 DE DE59610120T patent/DE59610120D1/de not_active Expired - Fee Related
- 1996-11-25 WO PCT/DE1996/002265 patent/WO1997021234A2/de active IP Right Grant
- 1996-11-25 EP EP96946014A patent/EP0864168B1/de not_active Expired - Lifetime
- 1996-11-25 CN CN96198494A patent/CN1068955C/zh not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2640921A1 (de) * | 1976-09-08 | 1978-03-09 | Siemens Ag | Vakuumschaltgeraet mit einer einrichtung zur ueberwachung der schaltstuecke |
DE2727378A1 (de) * | 1977-06-15 | 1979-01-04 | Siemens Ag | Einrichtung zur kontrolle der betriebsfaehigkeit von schaltgeraeten |
DE4309177A1 (de) * | 1993-03-22 | 1994-09-29 | Siemens Ag | Schaltgerät, insbesondere Schütz- oder Leistungsschalter |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1328591C (zh) * | 2005-12-26 | 2007-07-25 | 通领科技集团有限公司 | 接地故障断路器寿命终止检测保护方法及其电路 |
Also Published As
Publication number | Publication date |
---|---|
EP0864168A2 (de) | 1998-09-16 |
CN1202979A (zh) | 1998-12-23 |
DE59610120D1 (de) | 2003-03-13 |
DE19544926C1 (de) | 1997-04-30 |
CN1068955C (zh) | 2001-07-25 |
WO1997021234A3 (de) | 1997-08-14 |
JP2000501228A (ja) | 2000-02-02 |
JP3650127B2 (ja) | 2005-05-18 |
EP0864168B1 (de) | 2003-02-05 |
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